More now on the president's big decision from ABC's Jon Karl at the white house and, Jon, the president is under great pressure to act quickly and met with his national security team last night for several hours and as Martha suggested a wide range of options on the table. Reporter: Yeah, the military leadership presented him with options ranking at the low end to sending those about 100 special operation forces to Iraq simply to advise and to train the Iraqi military. At the high end would be a full-scale U.S. Bombing campaign against militanting its in northern Iraq. Expecting a decision from the president on this quite soon, George. Meanwhile, as you heard Martha report, the president's already notified congress he is sending 275 troops to the region to defend the embassy so we are already seeing the flow of U.S. Forces back into Iraq. But the white house is saying over and over again, this is not for combat. These will not be combat troops. And the white house also talking about working with Iran who has been an adversary. What might that look like? Reporter: Well, the way the white house looks at this is that Iran is the one force in the region that has influence with the government of prime minister Maliki so what the U.S. Is asking Iran to do and hoping Iran will do is to pressure Maliki to do some political reconciliation at the heart of this whole problem. Okay, Jon, thanks, the decision soon but not likely today.

This transcript has been automatically generated and may not be 100% accurate.

Now Playing: Two Torn Up Doctor's Notes Found in Germanwings Co-Pilot's Home

Now Playing: {{itm.title}}

{"id":24170192,"title":"Obama Under Pressure to Act Fast in Iraq","duration":"1:27","description":"The president met with his national security team for several hours.","url":"/GMA/video/president-obama-pressure-act-fast-iraq-24170192","section":"GMA","mediaType":"Default"}